<!DOCTYPE html>
<html>
<head>
	<title>PreloadJS: Queue Example</title>

	<link rel="stylesheet" type="text/css" href="./assets/demoStyles.css" />
	<style type="text/css">
		#template {
			display:none;
		}

		#mainProgress {
			width: auto;
			height: 20px;
			float: none;
			position: relative;
		}
		#mainProgress LABEL { position: absolute; }

		.item {
			height: 170px;
			width: 238px;
			border: 1px solid #eee;
			background-color: #ddd;
			padding: 2px;
			float:left;
			position: relative;
			text-align: center;
		}
		.item .progress {
			width: 0;
			height: 20px;
			background-color: #9c9;
			bottom: 0;
		}
		.complete {}
		.error {
			background-color: #FAA;
		}
		.complete DIV, .error DIV { display: none; }
	</style>
</head>
<body onload="init()">

	<header id="header" class="PreloadJS">
	    <h1><span class="text-product">Preload<strong>JS</strong></span> Preload Queue</h1>
	    <p>Click "load another" to add another image the the overall queue. As images are added, the preload progress reflects
		    the overall loaded progress. Click "load all" to queue everything at once.
		    Note that when loading images and sounds locally, you need to ensure that PreloadJS uses tag loading to avoid
		    cross-origin errors.</p>
	</header>

	<div id="container" class="content">
		<input type="button" id="loadAnotherBtn" value="Load Another" disabled="disabled" />
		<input type="button" id="loadAllBtn" value="Load All" disabled="disabled" />
		<input type="button" id="reloadBtn" value="Reset" />
		<div id="mainProgress" class="item">
			<label>Overall Progress</label><div class="progress"></div>
		</div>
		<hr />
		<!-- New items will get placed here -->
	</div>

	<!-- Item Template. This is cloned whenever we want a new one. -->
	<div id="template" class="item">
		<div class="progress"></div>
	</div>

	<!-- Note: All PreloadJS classes are listed here: -->
    <script type="text/javascript" src="../src/createjs/events/Event.js"></script>
    <script type="text/javascript" src="../src/createjs/events/EventDispatcher.js"></script>
	<script type="text/javascript" src="../src/createjs/utils/IndexOf.js"></script>
	<script type="text/javascript" src="../src/createjs/utils/Proxy.js"></script>
    <script type="text/javascript" src="../src/preloadjs/AbstractLoader.js"></script>
    <script type="text/javascript" src="../src/preloadjs/LoadQueue.js"></script>
    <script type="text/javascript" src="../src/preloadjs/TagLoader.js"></script>
    <script type="text/javascript" src="../src/preloadjs/XHRLoader.js"></script>

    <!-- We also provide hosted minified versions of all CreateJS libraries.
      http://code.createjs.com -->

    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>

    <script type="text/javascript">

        var map = {};
        var preload;
        var loader;
        var manifest;
        var w = 238; // Item width
        var h = 170; // Item height

        function init() {
            if (window.top != window) {
                document.getElementById("header").style.display = "none";
            }

            $("#loadAnotherBtn").click(loadAnother);
            $("#loadAllBtn").click(loadAll);
            $("#reloadBtn").click(reload);

            reload();
        }

        // Reset everything
        function reload() {
            // If there is an open preload queue, close it.
            if (preload != null) { preload.close(); }

            // Reset the UI
            $("#reloadBtn").css("display", "none");
            $(".box").remove();
            $("#mainProgress .progress").width(0);

            $("#loadAnotherBtn").attr("disabled", null);
            $("#loadAllBtn").attr("disabled", null);

            // Push each item into our manifest
            manifest = [
                "image0.jpg",
                "image1.jpg",
                "image2.jpg",
                "image3.jpg",
                "Autumn.png",
                "BlueBird.png",
                "Nepal.jpg",
                "Texas.jpg"
            ];

            // Create a preloader. There is no manifest added to it up-front, we will add items on-demand.
            preload = new createjs.LoadQueue(true, "assets/");

            // Use this instead to use tag loading
            //preload = new createjs.LoadQueue(false);

            preload.on("fileload", handleFileLoad);
            preload.on("progress", handleOverallProgress);
            preload.on("fileprogress", handleFileProgress);
            preload.on("error", handleFileError);
            preload.setMaxConnections(5);
        }

        function stop() {
            if (preload != null) { preload.close(); }
        }

        function loadAll() {
            while (manifest.length > 0) {
                loadAnother();
            }
        }

        function loadAnother() {
            // Get the next manifest item, and load it
            var item = manifest.shift();
            preload.loadFile(item);

            // If we have no more items, disable the UI.
            if (manifest.length == 0) {
                $("#loadAnotherBtn").attr("disabled", "disabled");
                $("#loadAllBtn").attr("disabled", "disabled");
                $("#reloadBtn").css("display","inline");
            }

            // Create a new loader display item
            var div = $("#template").clone();
            div.attr("id", ""); // Wipe out the ID
            div.addClass("box")
            $("#container").append(div);
            map[item] = div; // Store a reference to each item by its src
        }

        // File complete handler
        function handleFileLoad(event) {
            var div = map[event.item.id];
            div.addClass("complete");

            // Get a reference to the loaded image (<img/>)
            var img = event.result;

            // Resize it to fit inside the item
            var r = img.width/img.height;
            var ir = w/h
            if (r > ir) {
                img.width = w;
                img.height = w/r;
            } else {
                img.height = h;
                img.width = h;
            }
            div.append(img); // Add it to the DOM
        }

        // File progress handler
        function handleFileProgress(event) {
            var div = map[event.item.id]; // Lookup the related item
            div.children("DIV").width(event.progress*div.width()); // Set the width the progress.
        }

        // Overall progress handler
        function handleOverallProgress(event) {
            $("#mainProgress > .progress").width(preload.progress * $("#mainProgress").width());
        }

        // An error happened on a file
        function handleFileError(event) {
            var div = map[event.item.id];
            div.addClass("error");
        }

    </script>

</body>
</html>